Printing press



l,482,352 Jan' 29 1924 c. F. -DAUSMANN PRINTING PRESS Original FiledAug. 1919 2 Sheets-Sheet 1 5 nnen/Coz CZQVZeS Fa. M7770 7711 Jan.29,/1924. y1,482,352

c. F. DAUSMANN PRINTING PRESS Original Filed Aug. 6, 1919 2 Sheets-Sheet2 Charles Fm/ma/m gn f5 @Hom/w13 Patented Jan. 29, 1924..

CHARLES F. -DAUSMANIL OF BROOKLYN, NEW YORK, ASSIGNOB, TO THE PBISTONECO., INC., OFN'EWT` YORK, N. Y.,

A. CORPORATION OF NEW YORK.

' Parimenti P.

apiiucauon inea august e, 1919, semi No. surcos. jae'newea February7,1921. se-rial no. Maase To all lwhom t vmii/y concern:

Be it known .that I, CHARLES F. DAUS- MANN, a citizen of the` UnitedStates, anda 'resident ofthe borough of Brooklyn, county of Queens, cityand State of New York, have invented certain newl and usefulImprovements in Printin Presses, of which the following is a specication.

The present invention relates to improv ments in printing presses, andparticularly printing presses intended especiall for rotary gravurecolor printing. An obJect of the invention is to provide in such apress, means for accurately maintaining the register of colors betweenthe prints, such means being adjustable so as to enable the impart ingof several colors upon the paper or web passing through the press insuch manner.

that t e colors will be precisely, superiinposed. To this end I proposeto provide in the present embodiment of my invention, a plurality ofspaced print and impression .rollers adapted respectively to impart asingle color to the paper or web and between these a color registeringblanket continuously lmoving with the web and adapted to tension thesame, and-more particularly I propose to provide for such a b anket asupport of brass or other suitable material, of convex shape constantlymoving the blanket over the same under pressure, the friction betweenthe support and the rubber inducing static electricity in the rubber forthe purpose of attracting to the blanket the paper or web passing overthe same so that the web will cling to the blanket and the direction ofthe web through the press will thereby be maintained and guided sothatthe printed portions will not shift as they move from one printingroller @9 to another. A further object of the invention is to enable therelease of the impression rollers and the blankets so that the tensionupon the web will be relieved andthe inserting of a new web in; thepress will' be facilitated. I further propose to provide means for'simultaneously,by a single manual operation, releasing all of theblankets andimpression ro1lerseither of one printing couple or of two'inthe case of printing on both '50 sides of a sheet.

With, these and other objects in view, an embodiment of my invention isshown in the accompanying drawings, and this embodiment will behereinafter more fully described I with reference thereto andtheinvention will be nally pointed out inthe claims( In the accompanyingdrawin Fig. 1 is a side elevation of a printing press showing oneembodiment of m invention incorporated therein, certain we l known artsof the press being omitted for the 'sa e of clearness;

Fig. 2 is an end View of the' blanket and support;

Y' Fig. 3 is a front elevation thereof; and Fig. 4 is a detail frontview of the impression roller throw-off mechanism.

Similar reference characters indicate corresponding parts throughout theseveral figures of the drawin Referring to the drawings, and moreparticularly to Fig. 1 thereof, the press shown therein, com rises twoside sup orts or standards 10 aving a plurality o stepped horizontalshelf ortions 11, 12 and 13 upon which are slidably mounted the bearin s14 in which the ends of the shafts 15 o the .printing cylinders'lj arejournaled. In the present disclosure I have shown three print- 'ing setsadapted successively to impart 'three colors in su erimposed relationupon the web A passing t rough the press. lThis is merely forillustrative purposes however, and two,

four or any desired number of printing sets may be provided as will beunderstood.

pon the inner sides of the standards 10 and at one side of the printingcylinder there are secured slide bearing gibs 17 and 18 in which blockmembers 19 are slidable, said block lmembers having cast thereonbearings 19fin which are joiirnaled the ends ofV the shaft 20 of animpression roller 2l which bears upon the printing cylinder. Theprinting cylinder, it will be understood, is preferably of copper andhas an etched intaglio printing surface, the impression rollercooperating therewith having a rubber covering yieldingly engaging thesame. Ink is supplied to the printing cylinder by means of an inkingroller 16n rotating in an ink reservoir 16".

The bearing 19tl extends into a secondary bearing portion 22 in which isjournaled the shaft 23 over which one endoi the continuous blanket 24passes, the other end'passing over a shaft 25, the blanket extendingfrom the IDB vso

ass between the im ression and printing cylmder of one set to t e passof the impression and printing cylinder of the next set.

The shaft 15 of the printing cylinder of each set is lprovided at itsend with a Agear 26 which nies es with the spur teeth of a combinedlspur and beveled gear 27 journaled upon a stud shaft 'engaged by aseries of beveled, pinions 29 mounted upon a shaft 30 journaled inbearings 31 and extending uprightly of the standard 10 at one side, thesaid shaft being drivenaf'rom'the lowermost combined spur and beveledear Vwhich in turn is driven by the beveled pinion 32 ofthe horizontaldriving shaft 33, Thus the printing cylinders are simultaneously andequally driven.

Thev spur teeth of the combined spur and beveled gear 27 are engaged bya pinion car 34 rovidedupon the outer end of a shaft 35 )ouriialed inthe standard 10, the other end of the said shaft being provided with apinion lgear 36 meshin with a pinion gear 37provi ed upon a stu shaft 38and upon whlch shaft 38 there is provided-a sprocket gear 39 connectedby a sprocket chain 40 with a sprocket gear 41 mounted upon the end ofthe shaft 23 of the blanket, this transmission adapted to continuouslymove the blanket in the direction of movement of the web and at the samespeed therewith through the press. p

Upon the inner end faces of the standards there are mounted brackets 42extending between the standards and having at cach end cylindricalpassages 42n in which are slidably mounted nuts or blocks 43 throughwhich are threaded sc1ews44 connected at one end to the slide bearinother ends with and wheels 45. Upon parallel shafts 46 and 47 extendingbetween the upstanding end portions 42b of the brackets,

there are provided cams 48 and`49, the outer face portion 50 of the nut43 bein held constantlyin engagement withthe sai cams by means ofsprings 51 and 52, disposed in sockets ,51 and 52 formed in the bracketsabove and below the assages 42, the said springs being adjusta le as totension by means of set screws 51b and 52". The said cams are providedwith concentricportions of greatest distance from the axis of rotation,the said portions when engaged with the face portions 50 of the nutadapted to hold the impression roller in a predetermined constantposition at any point of the enga ment of said concentric portions withSaid ace portions. Intermesliing pinions 53 and 54 are provided upon therespective shafts 46 and 47 and the lower shaft 47 has mounted thereonan arm 55 which, upon being raised, will through the rotation of theshafts 47, turn the cams 48 and 49 so that the springs 51 and 52 forcethe nut 43 carrying the screw 44 outwardly 28, the beveled teeth being19 and provided at theirv of engagement with the printin cylinder, the uper end of :the b anket eing also move outwardly by this operation, thelower end being also moved at the same time by means that will bepresently more fully described.

The respective arms 55 of the printing sets are connected by a rod 56 sothat movement of one of the arms-will cause corresponding movement ofthe other and the throw-oil of allof the impression rollers will besimultaneous and equal. Thel lowermost arm 55 is connected by a rod 57to an arm 58 provided upon the shaft 59 of a segment gear 60 whichmeshes with a pinion 61 provided upon the shaft 62 of a gear 63, apinion 64 provided upon a shaft 65 mounted in a bracket 66 meshing withthe gear 63, a handle 67 being provided upon the shaft 65. By

turning the handle 67, the train of gears 64, 63, 61` and 60 will swingthe arm 58 upwardly thereby raising vthe rod 57 and the rod 56, causingthe arms 55 to be swung and the cams 48 and 49 to be turned to releasethe impression roller.

The blanket is pivotally connected at 68 to a pressure screw 69 havingits threaded portion extending through the plane bore of a poppet head70 pivotally supported at 71 upon an arm 72 mounted upon a shaft 73journaled in brackets 74, a lever 75 rovided upon the shaft 73 havingits slotte end 76 engaging a pin77 of the connection rody 56.

A spring 78 is disposed on the screw. be-V yieldingly iolds the blanketin engagement with the web. A hand nut 80 engages the threaded end Vofthe pressure screw 69 and is normally spaced from the poppet head.Turning of the hand nut 80 regulates the space between the mit and thepoppet head. Upon movement of the rod 56,`the lever 75 is swung upwardlythereby moving the head 7() outwar ly, lirst releasing the tension uponthe spring 78 and upon engagement with the nut 80 disengages the blanketfrom the web, this movement being simultaneous and substantially equalto the movement of the impression roller away from the printingcylinder. By'turning the hand nut against the poppet head, tension onthe web may be released as desired.

The press so tar described is adapted for the printing upon one side ofa web of paper. Upon occasion the paper is printed upon both sides by acontinuous process which consists in providing in opposed relation toone press a similar press from which the web is carried in such mannerthat the unprinted surface of the paper issuing from one press isprinted in the other press, and I have indicated at B a small portion ofan- Maaate.

other press arranged in this relation. Upon the shafts 47 of the twopresses there are provided respectively a downwardly exten ing arm 81and an upwardly extending arm 81" vconnected by means of a connectionrod 82 tion the rod 57 of one press is disconnected.

The lowermost blan et' not being' above the pass of a printing set, isnot swung outwardly at its lower end upon operation of the rod 56, butis independently provided with a pressure screw 69, a spring 78*a beingprovided thereon, which is adjustable as to tension by a hand nut apivotally supaorted in a bracket 80".

-rounded at their ends and connected at their ends by means of theshafts 23 and 25, the said shafts having mounted thereon adjacent theside plates and 91 and outwardly thereof, anged bushings 92, the flangesen-` gagin'g the plates at their outer sides, and upon the shaftsadjacent the inner sides of the plates there are provided sleeves 93 and94 upon which are mounted the respective cylindrical rollers 9 5 and 96over which a continuous covering 9.7 of rubber passes, and which I willhereinafter refer tol as the blanket. The portion of the blanketengaging the web is supported at its under side by means of a plate 98of brass or other suitable material, this plate being mounted upon bars99, and 101 connected at their ends to the side plates 90 and 91. Theplate 98 is longi- 'tudinally convexed. this being brought about byprojecting the bar 100 forwardly of the bars 99 and'101 so that thehighest point of the convexity is longitudinally in the center of theblanket.l As theA blanketmoves over the brass support. staticelectricity is set up in the rubber which attracts to the blanket thepaper web passing over the same so that the web is caused to cling tothe blanket and is thereby 'guided in its travel from one of theprinting sets to the other, and the colors imparted by the differentsets are caused to 'accurately register in superimposed relation witheach ot er due to the absence of any shifting of the web. The blanket iswider than the full width of the web passing' over the same. l

Any slack in the blanket may be taken up by means of an adjustableroller 102 over which the blanket passes at the rear, the said rollerhavingr its shaft 103 journaled in blocks 104 slidable in the cut-outs105 of brackets 106- secured to the side slots, and adapted to beadjusted by set screws 107.

Steam pipes 108 extend between the side supports and heat ther blanketsupport and blanket, thereby dr ing-the paper as it passes over the blaet.

1th my .improvements any desired ten? sion may be produced upon the webbetween the planting sets and by adjusting this tension 'to the desireddegree, the colors ma be made to register with precision, the a hesionof the web and the blanket caused s by the production of staticelectricity in the b anket preventing any displacement of the web. Theimpression rollers and the blankets may be slmultaneously .released fromthe web with facility. I.

I have illustrated and described a preferred and satisfactory embodiment`of my invention but it is obvious that changes may be made therelnwithin the spiritand scope thereof as defined I claim:

1. In a multicolor press, -mechanism for maintaining registration of aweb between spaced printing couples including a blanket yieldingly urgedagainst one side of the web, and means for moving the blanket.

2. In a multicolor press, rweb re istering mechanism' including asupport o convex shape and a `blanket movable u' on vthe convex supportwhereby static erlectrieity is induced in the blanket structure, a partot the moving blanket bein disposed iin juxtaposition to the web w erebythe web is subjected to the-'influence of the static electriclty andcaused to cling to the blanket surface, thereby guiding the web in itsmovement between spaced color printing couples of the press.

3. In a multicolor press, spaced sets of print ,and impression rollers,a movable blanket sup orted between the spaced printing sets anal)having a part thereof disposed in juxtaposition to the web extendingbetween the printing sets, means acting upon the blanket to engage thesame with the unprinted side of the web whereby the web is placed undertension; and. mfea-ns for moving the blanket.

4. In a multicolor press, web registering means including a plateextending the full width of the web, said late having a convex surfacelongitudina ly of the web with its highest point at the central `regionot the plate, an endless blanket movable over andupon the convex surfaceof the plate` and means for urging said plate and blanket towards theweb to frictionally enga-ge the blanket with one side of the web,

5. In a multicolor press, web registering means including a blanketsupport having a convex surface opposed to the web, a blanket movableover and in contact with said convex surface of the support whereby inthe appended claims.

of the blanket whereby the web is guided between the spaced printingcouples of the press, and means for adjusting the blanket I to Yregulateits frictional pressure .upon the convex surface of the support. Y

6. In a multicolor press having a plurality of print and impressionrollers, a relatively long and wide member between prints pressedagainst the web to place it under tension and' engaging the same at theunprinted side thereof along the major portionv of its surface betweenprints, and

yieldablymaintain it under tension to register-colors.

'7. Ina multicolor presshaving a plurality of print and impressionrollers, a relatively long and- Wide blanket between prints pressedagainst the web to place it under tension to maintain it under tensionto register colors and engaging the same at the unprinted side thereofalong the major portion of its surface between prints.

8. In a multicolor press, means for maintaining registers of colorsbetween prints consisting of a relativev long andv wide blanketyieldably presse against the web and engaging the same at the unprintedside thereof along the major portion of its surface between prints.

9. In a multicolor` press, a plurality of printing couples, eachcomprising a printing and an impression roller, a relatively long andwide blanket interposed between the printing couples and Aengaging theweb along the major portion of its surface be tween the printingcouples, means for pressing the blanket yieldably against the web, andmeans for operating the blanket to move the web between the printingcouples.

' l0. In a multicolor press, a plurality of )rinting couples, eachcomprising a printing and an impression roller, and mechanism for movingthe web between the printing couples comprising a blanket engaging theweb and a support for the blanket, and means for pressing the blanketagainst the web to cause the web to cling to the blanket with suiiicientpower to prevent relative movement between the blanket and .the alignedportions of the web.

11. In a multicolor press, a plurality of printing couples, each comrising a printing and an impression ro ler, and means for registeringthe web with the printing couples including traction devices forinducing static electricity to cause the web to cling to said means.

12. In a multicolor press, a plurality of printing couples, eachcomprising a printing and an impression roller, and mechanism betweenthe printing couples, Ameans for operatingthe blanket, and means foryieldably pressing the blanket against the web, said mechanism beingconstructed to cause the web to cling to the blanket with sufficientstrength to prevent relative movement between the blanket and thealigned portions of the web.

13. Means for maintaining registration of a web with a printing surfacecomprising a friction surface movable with the web, a stationary part.,and means on one side of said friction surface frictionally coactingwith said stationary part to induce an electrostatic charge on thefriction surface, said charge exerting an attractive influence on theweb to hold the same in close contact with the friction surface formovement as a unit therewith.

14. Means forregistering a web with a printing surface, comprising .afixed part,

a flexible member frictionally engaging said fixed. part to induce anelectrostatic charge, and a surface of high frictional material carriedby said member and opposed to4 the web whereby said web is drawn by the.attractive influence of the electrostatic charge into close contactwith said surface for movement as a unit therewith.

15. In combination with a printing press lhaving a plurality of spacedprinting sets, means arranged in the spaces between the printing setsfor producin electrostatic charges and co-operating wit the opposedsection ofthe paper web extending between the printing sets toaccurately register the web with the printing surfaces, and means forsimultaneously relieving the spaced sections of the web from theinfluence of the electrostatic charges. v

16. In combination with a printing press having a plurality of spacedprinting sets, means arranged in the spaces between the printing setsfor producing electrostatic charges and cooperating with the opposedsection of the paper web extending between the printing sets toaccurately register the web with the printing surfaces, and means forsimultaneously shifting all of the electrostatic charge producing meansbodily with respect to the web to relieve the latter from the influenceof the electrostatic charges.

17. In combination with a printing press having a plurality ofvertically spaced printing couples, means arranged in the spaces betweensaid printing couples for producing electrostatic charges andco-operating with the opposed sections of the web extending between theprinting couples to register the web with the printing surfaces andmeans for simultaneously relieving the acting by their attractiveinfluence over sublo stantlally the entire area of the sections of paperweb extending between the printing couples to maintain Lregister of theweb with the printing cylinders.

In testimony that I claim the foregoing l5 as my invention, I havesigned my name hereunder.

CHARLES F. DAUSMANN.

